Wonder Crossword Puzzle

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Across
  1. 3. Ending
  2. 4. To inform
  3. 5. A general rule
  4. 10. Roof of mouth
  5. 11. Rough, sharp points
  6. 13. Normal
  7. 15. Split
  8. 17. Look fixedly
  9. 18. Insert or fix
  10. 19. Arrangement in a straight line
Down
  1. 1. Memorial
  2. 2. Unordinary
  3. 6. A disease
  4. 7. A rude "game"
  5. 8. Alter or move
  6. 9. On edge
  7. 12. Achievement
  8. 14. Of physical space
  9. 16. Death
  10. 20. Sick to the stomach